Headphone charging case



FIG. 1 is a front top, front, right side perspective view of a headphone charging case, showing my new design closed in a first configuration;

FIG. 2 is a bottom, rear, left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is top, front, right side perspective view of the headphone charging case of FIG. 1 shown in a condition of use in a second configuration.

In the drawings, the broken lines depict portions of the headphone charging case that form no part of the claimed design. In FIG. 9, the broken lines showing earphones depict environmental subject matter only, and form no part of the claimed design. 

CLAIM The ornamental design for a headphone charging case, as shown and described. 